TireSizesFinder

245/55R19 vs 265/55R19

265/55R19 is 0.87 in (22.0 mm) taller than 245/55R19, a +2.93% diameter difference. With the speedometer set for 245/55R19, an indicated 60 mph is 61.8 mph on 265/55R19.

Is this a safe swap?

Diameter difference +2.93%: within the ±3% guideline

By overall diameter alone, 265/55R19 falls inside the ±3% range commonly used as a guideline when replacing 245/55R19. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 245/55R19 (29.61 in) vs 265/55R19 (30.48 in)245/55R1929.61 in × 9.65 in265/55R1930.48 in × 10.43 in
Side profile and tread width, drawn to the same scale.
245/55R19 vs 265/55R19 differences
Measurement245/55R19265/55R19Difference% diff
Overall diameter29.61 in (752.1 mm)30.48 in (774.1 mm)+0.87 in (+22.0 mm)+2.93%
Sidewall height5.31 in (134.8 mm)5.74 in (145.8 mm)+0.43 in (+11.0 mm)+8.16%
Section width9.65 in (245.0 mm)10.43 in (265.0 mm)+0.79 in (+20.0 mm)+8.16%
Circumference93.02 in (2,362.8 mm)95.74 in (2,431.9 mm)+2.72 in (+69.1 mm)+2.93%
Revolutions per mile681662−19−2.84%
True speed with the speedometer calibrated for 245/55R19
IndicatedActual on 245/55R19Actual on 265/55R19Difference
30 mph30.0 mph30.9 mph+0.9 mph
60 mph60.0 mph61.8 mph+1.8 mph
75 mph75.0 mph77.2 mph+2.2 mph

Ride-height change: 265/55R19 raises the vehicle by 0.43 in (11.0 mm) at the axle (half the +22.0 mm diameter difference).

265/55R19 is 0.87 in taller than 245/55R19 and 20 mm wider, a 2.93% difference in overall diameter.

With the speedometer calibrated for 245/55R19, an indicated 60 mph is actually 61.8 mph on 265/55R19, and revolutions per mile change from 681 to 662.

Both sizes mount on 19-inch wheels.

Size pages

Other comparisons with 245/55R19

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Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.